From: Paulo Roberto Urio <paulourio@gmail.com>
Date: Mon, 4 Jun 2012 00:40:28 +0000 (+0800)
Subject: Fixed segfault in libwebsocket_context_destroy.
X-Git-Tag: 1.2~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1f680abb7da6994ed7073d52fca2dadc103e5fe4;p=profile%2Fivi%2Flibwebsockets.git

Fixed segfault in libwebsocket_context_destroy.

When creating a context with NULL extensions list,
a segmentation fault was yelled when trying to
destroy the context.  This checks if the
extension list is NULL before go through the list.
Signed-off-by: Paulo Roberto Urio <paulourio@gmail.com>
---

diff --git a/lib/libwebsockets.c b/lib/libwebsockets.c
index 4b5ec8b..4c19a15 100644
--- a/lib/libwebsockets.c
+++ b/lib/libwebsockets.c
@@ -2094,7 +2094,7 @@ libwebsocket_context_destroy(struct libwebsocket_context *context)
 	m = LWS_EXT_CALLBACK_CLIENT_CONTEXT_DESTRUCT;
 	if (context->listen_port)
 		m = LWS_EXT_CALLBACK_SERVER_CONTEXT_DESTRUCT;
-	while (ext->callback) {
+	while (ext && ext->callback) {
 		ext->callback(context, ext, NULL, m, NULL, NULL, 0);
 		ext++;
 	}